prosody
082c7d856e61
util/uuid.lua

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Software / code / prosody

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util/uuid.lua @ 13170:082c7d856e61

core, plugins: Split prosody:user role into prosody:{guest,registered,member} This gives us more granular control over different types of user account. Accounts registered by IBR get assigned prosody:registered by default, while accounts provisioned by an admin (e.g. via prosodyctl shell) will receive prosody:member by default.
author Matthew Wild <mwild1@gmail.com>
date Thu, 29 Jun 2023 15:36:13 +0100
parent 12975:d10957394a3c
line wrap: on
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-- Prosody IM
-- Copyright (C) 2008-2010 Matthew Wild
-- Copyright (C) 2008-2010 Waqas Hussain
--
-- This project is MIT/X11 licensed. Please see the
-- COPYING file in the source package for more information.
--

local random = require "prosody.util.random";
local random_bytes = random.bytes;
local hex = require "prosody.util.hex".encode;
local m_ceil = math.ceil;

local function get_nibbles(n)
	return hex(random_bytes(m_ceil(n/2))):sub(1, n);
end

local function get_twobits()
	return ("%x"):format(random_bytes(1):byte() % 4 + 8);
end

local function generate()
	-- generate RFC 4122 complaint UUIDs (version 4 - random)
	return get_nibbles(8).."-"..get_nibbles(4).."-4"..get_nibbles(3).."-"..(get_twobits())..get_nibbles(3).."-"..get_nibbles(12);
end

return {
	get_nibbles=get_nibbles;
	generate = generate ;
	-- COMPAT
	seed = random.seed;
};